Clamp



FIG. 1 is a front and side perspective view of a clamp embodying our new design;

FIG. 2 is a back view thereof;

FIG. 3 is front view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a bottom view; and,

FIG. 8 is a back and side perspective view thereof. 

CLAIM The ornamental design for a clamp, as shown and described. 